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<?php
class RenderStrategy {
protected $conn = null;
public function __construct($conn) {
$this->conn = $conn;
}
/*! render from DB resultset
@param res
DB resultset
process commands, output requested data as XML
*/
public function render_set($res, $name, $dload, $sep){
$output="";
$index=0;
$conn = $this->conn;
$conn->event->trigger("beforeRenderSet",$conn,$res,$conn->get_config());
while ($data=$conn->sql->get_next($res)){
$data = new $name($data,$conn->get_config(),$index);
if ($data->get_id()===false)
$data->set_id($conn->uuid());
$conn->event->trigger("beforeRender",$data);
$output.=$data->to_xml().$sep;
$index++;
}
return $output;
}
}
class JSONRenderStrategy {
/*! render from DB resultset
@param res
DB resultset
process commands, output requested data as json
*/
public function render_set($res, $name, $dload, $sep){
$output=array();
$index=0;
$conn = $this->conn;
$conn->event->trigger("beforeRenderSet",$conn,$res,$conn->get_config());
while ($data=$conn->sql->get_next($res)){
$data = new $name($data,$conn->get_config(),$index);
if ($data->get_id()===false)
$data->set_id($conn->uuid());
$conn->event->trigger("beforeRender",$data);
$output[]=$data->to_xml();
$index++;
}
return json_encode($output);
}
}
class TreeRenderStrategy extends RenderStrategy {
public function render_set($res, $name, $dload, $sep){
$output="";
$index=0;
$conn = $this->conn;
while ($data=$conn->sql->get_next($res)){
$data = new $name($data,$conn->get_config(),$index);
$conn->event->trigger("beforeRender",$data);
//there is no info about child elements,
//if we are using dyn. loading - assume that it has,
//in normal mode juse exec sub-render routine
if ($data->has_kids()===-1 && $dload)
$data->set_kids(true);
$output.=$data->to_xml_start();
if ($data->has_kids()===-1 || ( $data->has_kids()==true && !$dload)){
$sub_request = new DataRequestConfig($conn->get_request());
$sub_request->set_relation($data->get_id());
$output.=$this->render_set($conn->sql->select($sub_request), $name, $dload, $sep);
}
$output.=$data->to_xml_end();
$index++;
}
return $output;
}
}
class JSONTreeRenderStrategy extends RenderStrategy {
public function render_set($res, $name, $dload, $sep){
$output=array();
$index=0;
$conn = $this->conn;
while ($data=$conn->sql->get_next($res)){
$data = new $name($data,$conn->get_config(),$index);
$conn->event->trigger("beforeRender",$data);
//there is no info about child elements,
//if we are using dyn. loading - assume that it has,
//in normal mode just exec sub-render routine
if ($data->has_kids()===-1 && $dload)
$data->set_kids(true);
$record = $data->to_xml_start();
if ($data->has_kids()===-1 || ( $data->has_kids()==true && !$dload)){
$sub_request = new DataRequestConfig($conn->get_request());
$sub_request->set_relation($data->get_id());
$temp = $this->render_set($conn->sql->select($sub_request), $name, $dload, $sep);
if (sizeof($temp))
$record["data"] = $temp;
}
$output[] = $record;
$index++;
}
return $output;
}
}
class MultitableRenderStrategy extends RenderStrategy {
public function render_set($res, $name, $dload, $sep){
$output="";
$index=0;
$conn = $this->conn;
$config = $conn->get_config();
while ($data=$conn->sql->get_next($res)){
$data[$config->id['name']] = $conn->level_id($data[$config->id['name']]);
$data = new $name($data,$config,$index);
$conn->event->trigger("beforeRender",$data);
if (($conn->getMaxLevel() !== null)&&($conn->get_level() == $conn->getMaxLevel())) {
$data->set_kids(false);
} else {
if ($data->has_kids()===-1)
$data->set_kids(true);
}
$output.=$data->to_xml_start();
$output.=$data->to_xml_end();
$index++;
}
return $output;
}
}
class JSONMultitableRenderStrategy extends MultitableRenderStrategy {
public function render_set($res, $name, $dload, $sep){
$output=array();
$index=0;
$conn = $this->conn;
$config = $conn->get_config();
while ($data=$conn->sql->get_next($res)){
$data[$config->id['name']] = $conn->level_id($data[$config->id['name']]);
$data = new $name($data,$config,$index);
$conn->event->trigger("beforeRender",$data);
if ($conn->is_max_level()) {
$data->set_kids(false);
} else {
if ($data->has_kids()===-1)
$data->set_kids(true);
}
$record = $data->to_xml_start($output);
$output[] = $record;
$index++;
}
return $output;
}
}
class GroupRenderStrategy extends RenderStrategy {
private $id_postfix = '__{group_param}';
public function render_set($res, $name, $dload, $sep){
$output="";
$index=0;
$conn = $this->conn;
$config = $conn->get_config();
while ($data=$conn->sql->get_next($res)){
if (isset($data[$config->id['name']])) {
$has_kids = false;
} else {
$data[$config->id['name']] = $data['value'].$this->id_postfix;
$data[$config->text[0]['name']] = $data['value'];
$has_kids = true;
}
$data = new $name($data,$config,$index);
$conn->event->trigger("beforeRender",$data);
if ($has_kids === false) {
$data->set_kids(false);
}
if ($data->has_kids()===-1 && $dload)
$data->set_kids(true);
$output.=$data->to_xml_start();
if (($data->has_kids()===-1 || ( $data->has_kids()==true && !$dload))&&($has_kids == true)){
$sub_request = new DataRequestConfig($conn->get_request());
$sub_request->set_relation(str_replace($this->id_postfix, "", $data->get_id()));
$output.=$this->render_set($conn->sql->select($sub_request), $name, $dload, $sep);
}
$output.=$data->to_xml_end();
$index++;
}
return $output;
}
public function check_id($action) {
if (isset($_GET['editing'])) {
$config = $this->conn->get_config();
$id = $action->get_id();
$pid = $action->get_value($config->relation_id['name']);
$pid = str_replace($this->id_postfix, "", $pid);
$action->set_value($config->relation_id['name'], $pid);
if (!empty($pid)) {
return $action;
} else {
$action->error();
$action->set_response_text("This record can't be updated!");
return $action;
}
} else {
return $action;
}
}
public function replace_postfix() {
if (isset($_GET['id'])) {
$_GET['id'] = str_replace($this->id_postfix, "", $_GET['id']);
}
}
public function get_postfix() {
return $this->id_postfix;
}
}
?>
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